Navigation Links
Scientists Spot Eyes' Motion Sensors
Date:10/11/2007

Tough-to-detect cells do the job, physicists say

THURSDAY, Oct. 11 (HealthDay News) -- U.S. scientists say they've identified a type of retinal nerve cell that helps humans, monkeys and apes see motion.

The discovery of this "upsilon cell" may help improve understanding of vision in humans and other primates. The finding, by high-energy physicists at the University of California, Santa Cruz, and neuroscientists at the Salk Institute in La Jolla, Calif., was published in the Oct. 10 issue of the Journal of Neuroscience.

There are only a small number of upsilon cells, which makes them difficult to find when using traditional techniques. The discovery was made using a new detection system -- with 512 electrodes on an area about the size of a pinhead -- inspired by the UCSC scientists' research looking for particles in high-energy-physics collisions.

"This has been a fantastic journey through high-energy physics, neurobiology, technology, and human health," study senior author Alan Litke, adjunct professor of physics at UCSC's Santa Cruz Institute for Particle Physics, said in a prepared statement.

Biologists have identified about 22 distinct types of primate retinal nerve cells but only know the functions of about a half dozen of them.

"People have looked at cell morphology, but that can't tell us in any detail how the cell responds to light," Litke said. "If we're interested in how the retina is processing visual information, we really want to focus a movie on it and see what it reacts to -- to find out if it's seeing color, responding to motion, or whatever it might be doing."

Litke and his colleagues projected simple movies through a microscope lens and onto a patch of retina. As the rod and cone cells picked up the images, they sent electrical signals to different kinds of retinal nerve cells. Further research revealed the presence and distribution of the upsilon cells and their likely role in detecting motion.

More information

The Washington University School of Medicine in St. Louis has more about the eyes.



-- Robert Preidt



SOURCE: University of California, Santa Cruz, news release, Oct. 9, 2007


'/>"/>
Copyright©2007 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. Nobel Prize for Medicine shared by Three scientists
2. Scientists plan human cloning clinic in the United States
3. Scientists crack mechanism of Leptin-Obesity Hormone
4. Scientists use plant hormones to fight cancer
5. American scientists alter gene makeup of babies
6. Expose on eating disorders!! Scientists trace “brain’s eating control center pathway”
7. Scientists found ancient Human Germ Killer
8. Scientists locate key hormone involved in appetite control
9. Scientists open the book of life
10. Electronic nose by Italian scientists
11. Scientists review SARS
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/21/2017)... Boca Raton, FL (PRWEB) , ... January 21, 2017 , ... ... from Germany, announced it is bringing its product to the United States as part ... perfected over the last 25 years, Alcovit aims to reduce the productions of nasty ...
(Date:1/21/2017)... ... January 21, 2017 , ... Pacifica Graduate Institute’s Alumni Association ... of events for its annual meeting “Coming Home 2017,” an activity-packed weekend of ... 2017” will be held on Friday January 27 through Sunday, January 29, 2017 ...
(Date:1/21/2017)... , ... January 21, 2017 , ... ... Austin, Texas Periodontist Dr. Dan Holtzclaw in media for its creos™ line of ... surgeries performed by Dr. Holtzclaw in which he utilizes creos™ allo.gain™ bone graft ...
(Date:1/20/2017)... , ... January 20, 2017 , ... Source Vitál Apothecary, ... 100 percent pure essential oils, announced the company had a successful visit to the ... annual ECRM event gives companies that work in the nutritional, sports and health industries ...
(Date:1/20/2017)... ... January 20, 2017 , ... ATP Science, an ... lives, recently attended the January ECRM Trade Show in Hilton Head, SC, benefiting ... its large range of supplements that keep the body functioning at its peak ...
Breaking Medicine News(10 mins):
(Date:1/21/2017)... 20, 2017 Research and Markets has announced ... Trends - Technology, Route Of Administration, End User - Forecast to ... ... to grow at a CAGR of around 7.8% over the next ... This industry report analyzes the global markets for Advanced Drug Delivery ...
(Date:1/20/2017)...  Ethicon Endo-Surgery, Inc. announced today that ... a privately held medical device company that ... in operating rooms worldwide. The acquisition brings ... devices with Megadyne,s innovative portfolio of electrosurgical ... Ethicon,s goal to deliver the most comprehensive ...
(Date:1/20/2017)... Fla. , Jan. 20, 2017 Wells Specialty ... at 3796 Howell Branch Rd in Winter Park, ... Winter Park . Operations have been consolidated into ... Pharmacy is also pleased to announce that Chad Tomlinson ... President of the Company effective immediately. Mr. Tomlinson is a ...
Breaking Medicine Technology: